Harwich, Essex
Positive input ventilation (PIV) in Harwich
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Harwich and CO12, IP10 and IP11.
- From £825 inc VAT per home
- Free survey

For a typical Harwich semi or terrace, a loft PIV unit is often the quickest way to dry the house out.
Harwich is about 142 miles from our base in Great Barr, Birmingham. We book Harwich visits by appointment and confirm the date in writing. Surveys for new installations are free on the UK mainland, with a written quote afterwards.
PIV in Harwich at a glance
- Town
- Harwich, Essex
- Postcode districts
- CO12, IP10 and IP11
- Nearby
- Felixstowe (3 miles), Walton-on-the-Naze (6 miles) and Frinton-on-Sea (8 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
How we approach PIV in Harwich
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
Heated PIV
A heater module tempers the incoming air in cold weather. Useful in homes where people feel draughts.
Wall-mounted PIV for flats
Draws air from outside through an outside wall. Suits flats and homes with no loft space.
Guide prices in Harwich
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,475 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,050–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£310 inc VAT |
Guide prices using East of England rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
When to get it looked at
- The house feels stuffy and damp rather than cold
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. For homes, it sets minimum extract rates such as 15 litres a second for a bathroom and 30 or 60 for a kitchen, and expects mechanical systems to be airflow-tested.
Questions from Harwich
Is the survey free in Harwich?
For new installations on the UK mainland, yes. The survey is free and the quote that follows is fixed and in writing. Servicing, testing and repair visits are charged, and we confirm the cost before booking.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
How do I get a price for a PIV unit in Harwich?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
What area around Harwich do you work in?
All of Essex. Near Harwich that includes Felixstowe, Walton-on-the-Naze, Frinton-on-Sea and Kesgrave.
Tell us whether your Harwich home has a loft and we can price a PIV unit before visiting.
PIV near Harwich
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Answer a few questions for a price range, or send photos and we will come back to you with a written quote.